Machu Picchu records about 1950mm of rain across roughly 135 wet days a year, which is a 37% chance on an average day. February is the wettest month at 155mm (8% of the annual total) and July the driest at 22mm. Local rain type: monsoon. Machu Picchu's cloud forest location means rain can occur any time. The dry season (May-September) is ideal but even then, morning mist is common.
Chance of rain on an average day: 37%
Rainfall climatology for Machu Picchu. The live hour-by-hour answer for today loads at the top of this page from Open-Meteo and refreshes through the day — the figures below describe a typical year, not today.
Last updated: · Live forecast data refreshes hourly.
| Annual rainfall | 1950mm |
| Rain days per year | 135 |
| Odds on an average day | 37% |
| Wettest month | February — 155mm over 20 days |
| Driest month | July — 22mm over 3 days |
| Rain type | monsoon |
| Best dry window | June through August offers the driest conditions — cold but clear mornings. |
| Worst rain window | December through February brings the heaviest rain and occasional trail closures. |
February delivers 605% more rain than July (155mm vs 22mm). That gap is the difference between planning around showers and ignoring them.
No single month holds more than 8% of the annual total, so rain in Machu Picchu is spread through the year — there is no season you can rely on being dry.
Machu Picchu rain arrives in short, heavy bursts — shelter and timing matter more than gear.
Rain falls on about 20 days in February against 3 in July — the frequency swing matters more for planning than the millimetre totals.
Climate normals. Use them to judge whether today's live forecast at the top of the page is typical or unusual for the season.
| Month | Rainfall | Rain days | Chance on a given day | Highs |
|---|---|---|---|---|
| January | 155mm | 20 | 67% | 22°C |
| February | 155mm | 20 | 67% | 22°C |
| March | 148mm | 19 | 63% | 22°C |
| April | 90mm | 11 | 37% | 21°C |
| May | 45mm | 6 | 20% | 20°C |
| June | 30mm | 4 | 13% | 19°C |
| July | 22mm | 3 | 10% | 19°C |
| August | 30mm | 4 | 13% | 19°C |
| September | 50mm | 6 | 20% | 19°C |
| October | 105mm | 13 | 43% | 20°C |
| November | 95mm | 12 | 40% | 21°C |
| December | 145mm | 18 | 60% | 22°C |
Rain probability is the chance that at least 0.2mm falls at your location — not how long it rains. For Machu Picchu we combine the hourly probability curve, expected volume in millimetres, and the city's own rainfall record into a single umbrella verdict.
| Factor | Weight | What it measures |
|---|---|---|
| Hourly probability | 40% | Peak and sustained chance of measurable rain across the next 24 hours. |
| Expected volume | 30% | Total millimetres, which separates a passing shower from a genuine soaking. |
| Timing & duration | 20% | When rain starts, when it eases, and the longest continuous dry window. |
| Local rain type | 10% | Drizzle, brief showers, thunderstorms or monsoon — each needs different gear. |
Live hourly values come from Open-Meteo and refresh through the day. Monthly rainfall figures are climate normals, so they describe a typical year rather than a forecast.
Machu Picchu records rain on roughly 135 days a year — about a 37% chance on any given day — totalling around 1950mm.
February, with about 155mm over 20 rain days. That is 8% of the entire year's rainfall in a single month.
July is the driest month at 22mm across roughly 3 days. June through August offers the driest conditions — cold but clear mornings.
Machu Picchu's cloud forest location means rain can occur any time. The dry season (May-September) is ideal but even then, morning mist is common.
No. Probability is the chance that at least 0.2mm of rain falls at your location at some point in the period. Check the expected millimetres alongside it: 40% with 0.4mm is a passing shower, 40% with 12mm is a soaking.